I have an almost 3 year old English Mastiff names Mercedes who is 152lbs. She is very hyper and is never loose when the birds are loose. The birds were here first and got to know them as a puppy but I would never trust her loose while my birds are out. She is just to big compared to them. When she was little in a crate my meyers used to fly on her crate and stick her head through the bars and try and bite her head. It was funny to watch because the dog just barked at her, I even have an old pic of it somewhere. She has gotten bit on the nose by my macaw (just a little to close to the cage).
I also have 4 outdoor cats that do sneak in occasionally but again my birds are never loose if they are in the house. I also have 3 hermit crabs as one just passed away. Its like a zoo over here!
















